Physical modeling experiments have been carried out to investigate the lateral drainage of liquids from a packed bed. The results have modified an empirical relationship previously used to quantify the volume of the lighter more viscous liquid in the two liquid system. This understanding has been used to validate a mathematical model that is used to monitor online the process of drainage of liquids from a packed bed, providing useful information in estimating actual remaining liquid volumes in the packed bed.

This paper highlights the application of fundamental knowledge acquired from the above model to control of liquid level at Port Kembla No.6 Blast Furnace, including cast scheduling and monitoring, advice for taphole opening and closure, clay management.